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n. n. noises; or PotreHKnEr-sts, New vonk. ,Leen-S Patent No. 63,7710, ma mi e, 1867..

IMPROVEMENT nr earns.

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TO ALL WHOM IT MAY CONGERN:

Be itknownthati, E. R. DoBBs, oftPonghkeepsie, in the county of Dutchess, and State of' New York, have invented anew and improved Gate; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use'the saine, reference being had to the accompanying drawings, Iforming part ot'this specification.

This invention relates to anewand improved Vgate of that class which are opened automatically by a vehicle -in its passage to the gate, and closed automatically bythe vehicle in leaving the gate after having 'passed through it. The object of this invention is to obtain a simple means to etl'ect this end, and one which may be economically constructed and applied, and which will operate inthe most eiicient manner. In the accompanying sheet of drawings- Figure l is a sectional elevation of my invention taken in the line n; x, iig. 2.. Figure 2, a transverse vertical section ot' the same taken in the line y y, iig. 1. Similailetters of reference indicate like parts.

l A represents an upright framing, in which the gate B works and is properly supported, said fra-ming being composed oi' two uprights, a, at each side, connected at their upper ends by two parallel oross-pieces, i5 b. The gate B slides between the uprights a a andis supported by the sanne. To the lower part of 'the gate B, at one end of the same, there is attached a wheel, C, having a groovedfpcriphery to run on a way, D, which is constructed ofa rod, the outer end of which is pivoted to an upright, c, at one end of a bar, l?, which projects from a horizontal framing G in which the framing A is secured, (see tig. l.) To the opposite end of the gate B, at its upper part, there is attached an uprightA bar, H, having'a Wheel, I, in its upper end provided with a grooved periphery which runs on a way, J, pivoted atene end to an upright, ci, at the upper end of two of the uprights a a oi' the framing A, as shown clearly in fig. l. The end of the way J, opposite to the pivoted end, is connected by apivot to an upright rod, K, which extends down by one side of the horizontal framing G, and is pivoted to a lever, L, which passes through an eye, c, secured to the under side ot' the har F, and the'inner end of the way D is bent or curved so that it may extend down by the opposite side 'of the horizontal framing G, and its lower end is pivoted to the outer end of a lever, IU, which passes througlran eye,f, in the bar F.

.These two levers L H* are in line with reach other, the eyes ef serving as fulera for the same, aswill be fully uhderstood by referring to iig. l; and the inner ends of the levers are pivoted to a vertical bar, I, which passes loosely through the bar F, and has a cross-head, g, on its upper end; and a spring, Ji", which is attached to the upper surface ot' F', bears against the under side of the cross-head and has a tendency to'keep the bar I elevated and the ways D J inclined, asshown in Hg. 1, so as to keep the gate B in a closed state, it being understood that the gate B restsupon the ways or is supported by them. At each side of the gate there is a platform, M, the inner edges of which rest upon the Vcross-head g of the bar I, the outer edges being hinged to the: framing Gr'. The gravity of thegate B, it will be'seen, in addition-to spring J, has a tendency to keep it in a closed state.

From the above description it will be-seen that a vehicle in approaching the gate at 'either side will byits gravity depressa platforn1,`M, and thereby 'throw up the outer ends ofthe levers L H* and reverse the inclination of the ways D J, as shown in red in fig. 1, and-the gate will eonsequeutlyslide out from between the uprights a of the framing A, sothat the vehicle may pass through, the gate closing as soon as the vehicle leaves the platform at'the opposite side of the gate freni that Where it was opened, the platforms ot' course being raised under the influence of the spring and the ways D J inclined to the original position, as shown in blue tint, and the gate will close. The levers L H* and 'har I may be iitted in a chamber of wood orl masonry in the earth underneath. the gate. The horizontal wooden framing G is not essential, as the nprights ai of the framing A may be sunk directly into the earth. Y

I elaiur as new, and desire to secure byLettei-s Patent- The pivoted or adjustable Ways DJ, with gate B resting' thereon, in combination with the platformsM M, connected with the Waysto operate in the manner substantially as and for the purpose herein set forth.

The above specification of my invention signed by me this 30th day of January, 1867.

' E. R. DOBBS.

Witnesses;

WM. F. McNaMARA, ALEX: E' Roniin'rs. 

